C / C++ / MFC

int CountArgs(char* unused, ...)
{
	int count = 0;

	va_list args;
	va_start(args, unused);

	for (char* cp = va_arg(args, char*); cp; cp = va_arg(args, char*))
	{
		count++;
	}
	
	va_end(args);

	return count;
}

int main()
{

	int numArgs = CountArgs("blah", "1", "2", "3", "4");

	return 0;
}

CountArgs(int numArgs, ...);

Todd Smith

19:   int main()
20:   {
004010B0   push        ebp
004010B1   mov         ebp,esp
004010B3   sub         esp,44h
004010B6   push        ebx
004010B7   push        esi
004010B8   push        edi
004010B9   lea         edi,[ebp-44h]
004010BC   mov         ecx,11h
004010C1   mov         eax,0CCCCCCCCh
004010C6   rep stos    dword ptr [edi]
21:       int numArgs = CountArgs("blah", "1", "2", "3", "4");
004010C8   push        offset string "4" (00422030)
004010CD   push        offset string "3" (0042202c)
004010D2   push        offset string "2" (00422028)
004010D7   push        offset string "1" (00422024)
004010DC   push        offset string "blah" (0042201c)
004010E1   call        @ILT+5(CountArgs) (0040100a)
004010E6   add         esp,14h
004010E9   mov         dword ptr [ebp-4],eax
22:       return 0;
004010EC   xor         eax,eax
23:   }
004010EE   pop         edi
004010EF   pop         esi
004010F0   pop         ebx
004010F1   add         esp,44h
004010F4   cmp         ebp,esp
004010F6   call        __chkesp (00401120)
004010FB   mov         esp,ebp
004010FD   pop         ebp
004010FE   ret

Todd Smith

CDC* pDC = GetDC();
if (m_tracker)
{
	delete m_tracker;
	m_tracker = NULL;
}
LPRECT rect = new RECT;
CWnd* wnd = (CWnd*)(GetDlgItem(IDC_EDIT1));

wnd->GetWindowRect(rect) ;
ScreenToClient(rect) ;
 
m_tracker = new CRectTracker(rect,CRectTracker::dottedLine  | CRectTracker::resizeOutside | CRectTracker::hatchedBorder );
m_tracker->Draw(pDC);
delete rect;
rect = NULL;